Motor-controlling mechanism.



K0. 780,533. PATENTED JAN. 24, 1905.

P. A. SHELBY.

MOTOR CONTROLLING MECHANISM. Lrrmouxon nub 81121224, 1904.

. UNITED STATES Patented. January 24, 1905 PATENT OFFICE.

MOTOR-CONTROLLING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 780,533, dated J anuary 24, 1905.

Application filed $eptember 24,1904. Serial No. 225,858.

1'0 ail whom it may concern,

Be it known that 1, PETER A. SHELEY, akin- This invention relates to motors, particularly spring-motors, and has for its object to provide improved means for insuring a steady running of the motor and in this connection to dispense with the usual train of gears between the spring power-shaft and the driven shaft or member, and thereby to permit of power being taken directly from the springactuated shaft.

With this object in View the present invention consists in the combination and arrangement of parts, as will be hereinafter more fully described, shown in the accompanying drawings, and particularly pointed out in the appended claims, it being understood that changes in the form, proportion, size, and minor details may be made within the scope of the claims without departing from the spirit or .sacrificing any of the advantages of the invention. 1

In the accompanying drawings, Figure 1 is a side elevation of the present invention, one side of the drive-chainbeing omitted to disclose the tumbling retarding devices. Fig. 2 is a detail View illustrating a step in the movement of one of the tumbling devices. Fig. 3 is a fragmentary perspective view of the drive-wheel. Fig. 4 is a detail perspective view of one of the links of the drive-chain. Fig. 5 is a detail perspective view of one of the tumbling devices. Y

Like characters of reference designate corresponding parts in each and every figure of the drawings.

In explanation of the present invention, reference being had to the accompanying drawings, I designates a power-shaft, preferably spring-driven, upon which a sprocket-wheel 2 is carried. The periphery of the sprocketwheel is provided with teeth 3, and between each pair of teeth is a concaved socket or recess 4, which begins at a suitable distance in front of one tooth and merges into the back of the next adjacent forward tooth. Within each recess is a bowed leaf-spring 5. having its rear end connected to the back of the recess by a suitable fastening 6, with its opposite end free and of a length to project asuit side, as at 10, and 'this reduced portion is I pierced by a central opening 11. The rear end of each link member is rounded or convexed and reduced upon its inner side, as at 12,- and also pierced by a central opening 13. l/Vhen a plurality of these links are assembled to form a chain, the rear end of each link embraces the forward end of the next in rear link and is loosely connected thereto by means of a bar 14. This chain embraces the sprocket- V wheel, as shown in Fig. l of the drawings, with the rigid cross-bars 9 of the links arranged to engage the teeth of the sprocketwheel, so as to be driven thereby.

Upon each of the bars lei which connects theacljacent links there is a cam-shaped tumbler 15, which-is mounted to. turn upon the cross-bar and designed to successively engage the seats or notches 16 in a stationary arcuate member 17 ,-embracing the bowed portion of the chain and supported in any suitable manner.

Assuming that the sprocket-wheel is driven in the direction of the arrow in Fig. 1, the

lower ply of,the chain will approach the sprocket-wheel and the tumblers 15 will successively engage the respective springs 5 and be turned transversely across the chain, so as to project one end of the tumbler at the outer edge of the chain for engagement with the first seat or recess 16 of the trip member 17 whereupon the tumbler will be turned rearwardly, as clearly indicated by Figs. 1 and 2 of thedrawings, against the frictional pressure of the spring 5, thereby operating to retard the rotation of the sprocket-wheel. As the sprocket-wheel continues to rotate, the retarding-tumbler will ltrip from the recess 16 and then be held by the spring in position for engagement with the next notch or recess of the trip member 17, and so on throughout the length of said member, whereby the desired retarding tendency is applied to the springactuated shaft 1, so as to insure a steady movement thereof Without the employment of a train of gears.

It will of course be understood that the chain leads to another sprocket-wheel (not shown) and may serve as the means for transferring power from the shaft 1. However, power may be transferred in any other preferred manner.

Having fully described the invention, what is claimed is 1. The combination with a power-shaft of an endless flexible connection engaged therewith, rotatable retarding devices carried by the flexible connection, a trip device located in the path of the retarding devices to rotate the same, and means carried by the shaft to frictionally engage the retarding devices dur ing the rotation thereof.

- 2. The combination with a power-shaft, of a sprocket-wheel carried thereby, a series of bowed springs connected to the periphery of the sprocket-wheel between the teeth thereof, a sprocket-chain engaging the sprocket-wheel and provided with rotatable retarding devices, and a trip device located in the path of the retarding devices to rotate the same, thesprings being disposed to frictionally engage the retarding devices during the rotation thereof.

3. The combination with a power-shaft, of asprocket-wheel carried thereby and provided with a series of recesses located between the teeth of the sprocket-wheel, a sprocket-chain engaging the sprocket-wheel, a bowed spring fixed at its rear end within each of the recesses with its opposite free end projected transversely from the recess, a series of rotatable retarding devices carried by the chain, and a bowed trip embracing the bowed portion of the chain and provided with a series of tripshoulders located in the path of the retarding devices, each spring being disposed to engage one of the retarding devices during the rotation thereof to yieldably resist the rotation of said device.

4. The combination with a power-shaft, of a sprocket-wheel carried thereby, a chain engaging the sprocket-wheel, each link being provided with a cross-bar located intermediate of its ends for engagement with a tooth of the sprocket-wheel, cam-shaped retarding devices mounted to rotate upon the bars which connect the successive links, a bowed trip embracing the bowed portion of the sprocketchain and provided with a succession of shoulders disposed in the path of the rotatable rctarding devices to rotate the same, and springs carried by the sprocket-wheel to engage the retarding devices and yieldably resist rotation thereof.

5. The combination with a power-shaft, of an endless flexible connection engaged therewith, retarding devices carried by the flexible connection, and means located in the path of the retarding devices for engagement therewith.

6. The combination with a power-shaft, of an endless flexible connection engaged therewith, yieldable retarding devices carried by the flexible connection, and means located in the path of the retarding devices for frictional engagement therewith.

7. The combination with a power-shaft, of an endless flexible connection engaged therewith, movable retarding devices carried by the flexible connection, means located in the path of the retarding devices for frictional engagement therewith, and means to yieldably resist the movement of the retarding devices.

8. The combination with a power-shaft, of an endless flexible connection engaged therewith, movable retarding devices carried by the flexible connection, springs to yieldably resist movement of said devices, and means located in the path of the retarding devices to move the same against the resisting action of the springs.

9. The combination with a power-shaft having a drive-wheel thereon, of an endless drive connection engaging the wheel, movable retarding devices carried by the flexible connection, a trip device embracing that portion of the flexible connection which is in engagement with the wheel and lying in the path of the movable retarding devices, and springs carried by the wheel in position to frictionally engage the retarding devices and yieldably resist movement thereof when in engagement with the trip device.

In testimony that 1 claim the foregoing as my own 1 have hereto aflixed my signature in the presence of two witnesses.

PETER A. SHELEY.

Witnesses:

J. H. J OCHUM, J r., ARCHIBALD BULLooH. 

